Ceramic briquette for a cooking grill



FIG. 1 is a perspective view of a ceramic briquette for a cooking grill, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is an end elevational view thereof;

FIG. 4 is a back elevational view thereof; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a ceramic briquette for a cooking grill, substantially as shown and described. 